Sorry to hear about your fall.
I had an early negative experience climbing with someone I didn't know. I only climb outside, and so I was pretty nervous and felt trapped (I'd gotten up a couple pitches and the only way down was up). I had never climbed with someone I didn't know before that day, and since that day I don't climb with anyone I don't know unless I am leading something that I know I can do without falling (barring the unexpected). And I don't let anyone lower me---I rap or walk off no matter how foolish it seems to the other person.
The downside: I have very few climbing partners.
The upside: I haven't been dropped and I feel like I have some measure of control over my safety.
The trade off is worth it for me; but then, I can be a nervous nelly sometimes.